Differential Oil Seal Removal (page 3 of 3)

Note: If any of the items listed below were replaced, the tapered roller bearing preload must be adjusted.

• Transmission housing
• Clutch housing
• Differential carrier
• Tapered roller bearing and bearing outer race
• Thrust shim

1. A Thrust Shim
2. B Transmission House

1. Remove the bearing outer race and thrust shim from the transmission housing.

Note: Install the selective thrust shim only on the transmission housing side.

CAUTION: Do not reuse the thrust shim if the bearing outer race was driven out.

Note: Let the transmission cool to room temperature if the bearing outer race was removed by heating the transmission housing. Adjust the tapered roller bearing preload.

2. First try the same size thrust shim that was removed.

CAUTION: Use only one thrust shim.

3. After installing the thrust shim, install the bearing outer race in the transmission housing.

Note:

• Install the bearing outer race squarely.
• Check that there is no clearance between the bearing outer race, thrust shim and transmission housing.

4. With the mainshaft and countershaft removed, install the differential assembly, and torque the clutch housing and transmission housing, see MANUAL GEARBOX.

Torque:
10 x 1.25 mm = 45 Nm.
8 x 1.25 mm = 28 Nm.

Note: It is not necessary to use sealing agent between the housings.

5. Rotate the differential assembly in both directions to seat the tapered roller bearings.

6. Measure the starting torque of the differential assembly with the special tools.

Standard: 1.4 – 2.6 Nm.

Note:

• Measure the tapered roller bearing preload at normal room temperature.
• Measure the tapered roller bearing preload in both directions.

7. If the tapered roller bearing preload is not within the standard, select the thrust shim which will give the correct tapered roller bearing.

Note: Changing the thrust shim to the next size will increase or decrease tapered roller bearing preload about 0.3 – 0.4 Nm.

>Selective thrust shims are availabe in the following thickness:
1.90mm to 2.47mm in steps of 0.03mm.